CN110719510A - Vehicle audio and video synchronous playing method - Google Patents
Vehicle audio and video synchronous playing method Download PDFInfo
- Publication number
- CN110719510A CN110719510A CN201910889577.5A CN201910889577A CN110719510A CN 110719510 A CN110719510 A CN 110719510A CN 201910889577 A CN201910889577 A CN 201910889577A CN 110719510 A CN110719510 A CN 110719510A
- Authority
- CN
- China
- Prior art keywords
- video
- audio
- screen
- synchronized
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
Abstract
The invention discloses a vehicle audio and video synchronous playing method, which comprises the following steps: the synchronized screen plays audio and video, and a user initiates audio and video synchronization operation; the synchronized screen video player synchronously decodes the video file and the audio file to generate video data and audio data with synchronous time stamps; writing the video data into a video memory of a video player of a synchronized screen, and copying a copy of the video data in a video memory copy mode of the video player of a target screen; audio data connects an audio data stream to audio output ports of the synchronized screen and the target screen simultaneously through audio routing; and after the video data and the audio data are converted and processed, the video player of the synchronized screen and the video player of the target screen synchronously play audio and video on the synchronized screen and the target screen respectively. The method of the invention solves the problem of audio and video sharing at the system level, effectively reduces the system consumption and increases the fluency and stability of the system.
Description
Technical Field
The invention belongs to the technical field of vehicle-mounted multimedia, and particularly relates to a vehicle-mounted audio and video synchronous playing method.
Background
A Vehicle-mounted information entertainment system (IVI for short) is a Vehicle-mounted comprehensive information processing system formed by adopting a Vehicle-mounted special central processing unit and based on a Vehicle body bus system and internet service. The IVI can realize a series of applications including three-dimensional navigation, real-time road conditions, IPTV, auxiliary driving, fault detection, vehicle information, vehicle body control, mobile office, wireless communication, online-based entertainment functions, TSP (short message service) service and the like, and greatly improves the vehicle electronization, networking and intelligentization levels.
Along with the continuous improvement of requirements of people on the aspects of comfort, entertainment and the like of passenger vehicles, a multimedia audio and video playing mode of one machine with multiple screens is applied to high-configuration passenger vehicles, and the models made in China are as follows: red-flag HS7, imported vehicle type as: the BMW and the like have the main application scenes that an IVI system host is physically connected with more than two entertainment screens to realize the synchronous playing of audio and video between the two entertainment screens, such as: when the front or rear screen in the vehicle plays the video, the playing content can be synchronously played to other screens (except for the instrument panel).
In the existing process of playing audio and video of one machine with multiple screens, the synchronous playing of the audio and video among the multiple screens is realized through software, namely, an application layer.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a vehicle audio and video synchronous playing method, which solves the problem of audio and video sharing at the system level, effectively reduces the system consumption and increases the smoothness and stability of the system. The technical scheme of the invention is as follows by combining the attached drawings of the specification:
a vehicle audio and video synchronous playing method comprises the following specific processes:
step 1: the synchronized screen plays audio and video, and a user initiates audio and video synchronization operation;
step 2: the video player of the synchronized screen synchronously decodes the video file and the audio file which play the audio and the video, and generates video data and audio data with synchronous timestamps;
and step 3: writing the video data into a video memory of a video player of a synchronized screen, and copying a copy of the video data in a video memory copy mode to be synchronously written into a video memory of a video player of a target screen; meanwhile, the audio data connects the audio data stream to the audio output ports of the synchronized screen and the target screen simultaneously through the audio route;
and 4, step 4: and after the video data and the audio data are converted and processed, the video player of the synchronized screen and the video player of the target screen synchronously play audio and video on the synchronized screen and the target screen respectively.
In step 1, there are three ways for the user to initiate audio and video synchronization operation, which are respectively as follows:
the first method comprises the following steps: the synchronized screen plays audio and video, a user clicks a push synchronization soft key on the synchronized screen, and the synchronized screen actively sends out a synchronization instruction;
and the second method comprises the following steps: the synchronized screen plays audio and video, a user clicks a request synchronization soft key on a target screen, and the target screen sends a request synchronization instruction;
and the third is that: and playing the audio and video by the synchronized screen, and sending an instruction of synchronizing to the target screen to the video player of the synchronized screen by a user in an off-screen triggering mode.
Compared with the prior art, the invention has the beneficial effects that:
1. the vehicle audio and video synchronous playing method provided by the invention is in the IVI system level, only one audio and video decoding is needed, the resource consumption of the IVI system can be effectively reduced, the synchronization process is shortened, the fluency of the IVI system is increased, the system instability is reduced, and the user experience is improved.
2. The vehicle-mounted audio and video synchronous playing method can realize point-to-point synchronization between the main screen and the auxiliary screen or between the auxiliary screen and the auxiliary screen.
3. In the vehicle-mounted audio and video synchronous playing method, the method for initiating synchronization is various, the synchronized screen can actively send the synchronous content to the target screen, the target screen can request to send the synchronous content to the synchronized screen, and the synchronous content on the synchronized screen can be synchronized to the target screen in an external triggering mode, such as key pressing outside the screen, gesture recognition signal triggering or VR triggering, so that the operation ways are various and the requirements of different levels of vehicle types can be matched.
4. In the vehicle-mounted audio and video synchronous playing method, the synchronization of video streams is realized by adopting a mode of sharing the video memory, the audio multipoint output is realized by adopting an audio routing mode, and finally the synchronization of audio and video is realized by a multimedia technology, so that the whole synchronization process is accurate and the synchronization is good.
Drawings
Fig. 1 is a schematic diagram of a peripheral structure of a one-machine multi-screen system to which the car-machine audio and video synchronous playing method of the invention is applied;
fig. 2a is a schematic diagram of a first mode of initiating audio and video synchronization operation in the car machine audio and video synchronization playing method according to the present invention;
fig. 2b is a schematic diagram of a second mode of initiating audio and video synchronization operation in the car machine audio and video synchronization playing method according to the present invention;
fig. 2c is a schematic diagram of a third mode of initiating audio and video synchronization operation in the car machine audio and video synchronization playing method according to the present invention;
fig. 3 is a specific process block diagram of the in-vehicle audio and video synchronous playing method of the invention.
Detailed Description
For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:
as shown in fig. 1, the in-vehicle audio and video synchronous playing method of the present invention is applicable to an in-vehicle audio and video synchronous playing system based on an IVI system, and the in-vehicle audio and video synchronous playing system is of a "one-machine multi-screen" structure, that is, a main screen and a main audio output terminal are connected to a host of the IVI system, and at the same time, a plurality of sub-screens capable of independently playing multimedia video files and sub-audio output terminals corresponding to the sub-screens one to one are connected in parallel to the host of the IVI system. The IVI system host is connected with the main screen and the main audio output end, and the IVI system host is connected with each auxiliary screen and each auxiliary audio output end by adopting a data line;
the main audio output end and the auxiliary audio output end are both independent sound output components (such as a loudspeaker) or independent sound output ports (such as a wired earphone connecting port or a Bluetooth earphone connecting port), and the auxiliary audio output ends are integrated on the corresponding auxiliary screens.
The method for synchronously playing the audio and the video of the vehicle machine can realize the synchronous playing of the audio and the video between the main screen and the auxiliary screen or between the auxiliary screen and the auxiliary screen. As shown in fig. 3, the in-vehicle audio and video synchronous playing method provided by the invention specifically comprises the following processes:
step 1: the screen A is used as a synchronized screen to play audio and video, at the moment, the screen B is used as a target screen, and a user initiates audio and video synchronization operation;
three modes of initiating audio and video synchronization operation by the user are provided, which are respectively as follows:
the first method comprises the following steps: as shown in fig. 2a, a screen a plays audio and video 1, a soft key is arranged on the screen a, a user clicks the soft key to "push to a screen B", at this time, a synchronization process is triggered, a video player of the screen a synchronizes the audio and video 1 from the screen a to the screen B, that is, the screen a actively synchronizes the audio and video 1 to the screen B, thereby realizing synchronization of the audio and video 1 played by the screen a to the screen B;
and the second method comprises the following steps: as shown in fig. 2B, the screen a plays audio and video 1, the screen B is provided with a soft key, a user clicks the soft key to "synchronize the screen a", the video player of the screen B will send a synchronization request to the video player of the screen a, at this time, the synchronization process is triggered, the video player of the screen a will synchronize the audio and video 1 from the screen a to the screen B, that is, the screen B requests the screen a to synchronize the audio and video 1, and further, the screen a plays the audio and video 1 to the screen B;
and the third is that: as shown in fig. 2c, when the screen a plays the audio/video 1, the user sends an instruction signal for synchronizing the audio/video 1 to the screen B to the video player of the screen a by clicking a key outside the screen, triggering a gesture recognition signal or triggering VR, and the like, and when the synchronization process is triggered, the video player of the screen a synchronizes the audio/video 1 from the screen a to the screen B, that is, by triggering the synchronization process externally, the synchronization process is further implemented to synchronize the audio/video 1 played by the screen a to the screen B;
step 2: the video player of the screen A synchronously decodes the video file and the audio file of the audio and video 1 to generate video data and audio data with synchronous timestamps;
and step 3: writing the decoded video data into a video memory of a video player of a screen A, and synchronously writing a copy of video data into a video memory of a video player of a screen B in a video memory copying mode; meanwhile, the audio data generated after decoding simultaneously connect the audio data stream to the audio output ports of the screen A and the screen B through audio routing software installed in the host of the IVI system;
and 4, step 4: according to the video playing technology, video data and audio data are converted into video files and audio files, and finally audio and video 1 are synchronously played on the screen A and the screen B respectively through a video player of the screen A and a video player of the screen B.
Claims (2)
1. A car machine audio and video synchronous playing method is characterized in that:
the vehicle audio and video synchronous playing method comprises the following specific processes:
step 1: the synchronized screen plays audio and video, and a user initiates audio and video synchronization operation;
step 2: the video player of the synchronized screen synchronously decodes the video file and the audio file which play the audio and the video, and generates video data and audio data with synchronous timestamps;
and step 3: writing the video data into a video memory of a video player of a synchronized screen, and copying a copy of the video data in a video memory copy mode to be synchronously written into a video memory of a video player of a target screen; meanwhile, the audio data connects the audio data stream to the audio output ports of the synchronized screen and the target screen simultaneously through the audio route;
and 4, step 4: and after the video data and the audio data are converted and processed, the video player of the synchronized screen and the video player of the target screen synchronously play audio and video on the synchronized screen and the target screen respectively.
2. The vehicle-mounted audio and video synchronous playing method according to claim 1, characterized in that:
in step 1, there are three ways for the user to initiate audio and video synchronization operation, which are respectively as follows:
the first method comprises the following steps: the synchronized screen plays audio and video, a user clicks a push synchronization soft key on the synchronized screen, and the synchronized screen actively sends out a synchronization instruction;
and the second method comprises the following steps: the synchronized screen plays audio and video, a user clicks a request synchronization soft key on a target screen, and the target screen sends a request synchronization instruction;
and the third is that: and playing the audio and video by the synchronized screen, and sending an instruction of synchronizing to the target screen to the video player of the synchronized screen by a user in an off-screen triggering mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910889577.5A CN110719510A (en) | 2019-09-20 | 2019-09-20 | Vehicle audio and video synchronous playing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910889577.5A CN110719510A (en) | 2019-09-20 | 2019-09-20 | Vehicle audio and video synchronous playing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110719510A true CN110719510A (en) | 2020-01-21 |
Family
ID=69210610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910889577.5A Pending CN110719510A (en) | 2019-09-20 | 2019-09-20 | Vehicle audio and video synchronous playing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110719510A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112040288A (en) * | 2020-09-04 | 2020-12-04 | 华人运通(上海)云计算科技有限公司 | Multimedia system |
| CN112153444A (en) * | 2020-09-17 | 2020-12-29 | 中国第一汽车股份有限公司 | Vehicle-mounted multi-screen video synchronization method and device, electronic system and storage medium |
| CN112203130A (en) * | 2020-09-09 | 2021-01-08 | 广州汽车集团股份有限公司 | Vehicle-mounted information entertainment terminal, multi-screen interactive display method thereof and automobile |
| CN112218140A (en) * | 2020-09-02 | 2021-01-12 | 中国第一汽车股份有限公司 | Video synchronous playing method, device, system and storage medium |
| CN113766283A (en) * | 2020-06-02 | 2021-12-07 | 云米互联科技(广东)有限公司 | Video synchronous playing method and device and computer readable storage medium |
| CN115426514A (en) * | 2022-07-22 | 2022-12-02 | 北京罗克维尔斯科技有限公司 | Cross-device audio and video synchronization method, device, equipment and medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883588A (en) * | 2015-05-28 | 2015-09-02 | 广东好帮手电子科技股份有限公司 | Vehicle multi-screen interconnection system and realization method thereof |
| CN107037858A (en) * | 2017-06-07 | 2017-08-11 | 黄之 | A kind of external equipment of mobile terminal and the display system of displaying information on screen |
| CN108255445A (en) * | 2016-12-28 | 2018-07-06 | 乐视汽车（北京）有限公司 | Vehicle device mirror image operation method, vehicle device, mobile terminal and vehicle |
| WO2018140404A1 (en) * | 2017-01-24 | 2018-08-02 | Lonza Limited | Methods and systems for using a virtual or augmented reality display to perform industrial maintenance |
| CN108881916A (en) * | 2018-06-21 | 2018-11-23 | 深圳市斯迈龙科技有限公司 | The video optimized processing method and processing device of remote desktop |
| CN110225379A (en) * | 2018-03-02 | 2019-09-10 | 上海博泰悦臻电子设备制造有限公司 | Intelligent terminal screen sharing method and system, car-mounted terminal based on car-mounted terminal |
-
2019
- 2019-09-20 CN CN201910889577.5A patent/CN110719510A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883588A (en) * | 2015-05-28 | 2015-09-02 | 广东好帮手电子科技股份有限公司 | Vehicle multi-screen interconnection system and realization method thereof |
| CN108255445A (en) * | 2016-12-28 | 2018-07-06 | 乐视汽车（北京）有限公司 | Vehicle device mirror image operation method, vehicle device, mobile terminal and vehicle |
| WO2018140404A1 (en) * | 2017-01-24 | 2018-08-02 | Lonza Limited | Methods and systems for using a virtual or augmented reality display to perform industrial maintenance |
| CN107037858A (en) * | 2017-06-07 | 2017-08-11 | 黄之 | A kind of external equipment of mobile terminal and the display system of displaying information on screen |
| CN110225379A (en) * | 2018-03-02 | 2019-09-10 | 上海博泰悦臻电子设备制造有限公司 | Intelligent terminal screen sharing method and system, car-mounted terminal based on car-mounted terminal |
| CN108881916A (en) * | 2018-06-21 | 2018-11-23 | 深圳市斯迈龙科技有限公司 | The video optimized processing method and processing device of remote desktop |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113766283A (en) * | 2020-06-02 | 2021-12-07 | 云米互联科技(广东)有限公司 | Video synchronous playing method and device and computer readable storage medium |
| CN112218140A (en) * | 2020-09-02 | 2021-01-12 | 中国第一汽车股份有限公司 | Video synchronous playing method, device, system and storage medium |
| CN112040288A (en) * | 2020-09-04 | 2020-12-04 | 华人运通(上海)云计算科技有限公司 | Multimedia system |
| CN112040288B (en) * | 2020-09-04 | 2022-07-12 | 华人运通(上海)云计算科技有限公司 | Multimedia system |
| CN112203130A (en) * | 2020-09-09 | 2021-01-08 | 广州汽车集团股份有限公司 | Vehicle-mounted information entertainment terminal, multi-screen interactive display method thereof and automobile |
| CN112203130B (en) * | 2020-09-09 | 2022-09-16 | 广州汽车集团股份有限公司 | Vehicle-mounted information entertainment terminal, multi-screen interactive display method thereof and automobile |
| CN112153444A (en) * | 2020-09-17 | 2020-12-29 | 中国第一汽车股份有限公司 | Vehicle-mounted multi-screen video synchronization method and device, electronic system and storage medium |
| CN115426514A (en) * | 2022-07-22 | 2022-12-02 | 北京罗克维尔斯科技有限公司 | Cross-device audio and video synchronization method, device, equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110719510A (en) | Vehicle audio and video synchronous playing method | |
| CN111002996B (en) | Vehicle-mounted voice interaction method, server, vehicle and storage medium | |
| CN101409671B (en) | Multiplexing network system and digital information transferring method | |
| US20210295857A1 (en) | Voice recognition method, voice recognition apparatus, electronic device and computer readable storage medium | |
| US9877064B2 (en) | Systems and methods for efficient event-based synchronization in media file transfer and real-time display rendering between a peripheral system and a host device | |
| US20170026684A1 (en) | Communications between a peripheral system and a host device in efficient event-based synchronization of media transfer for real-time display rendering | |
| CN103559902A (en) | Method for interaction control over mobile terminal device and car audio and video system | |
| CN112055242A (en) | Video synchronous playing method, device, system and storage medium | |
| US9886980B2 (en) | Method for synchronizing A/V streams | |
| CN202814405U (en) | Vehicle-mounted multi-screen navigator system | |
| CN112040288B (en) | Multimedia system | |
| CN110489072B (en) | Method and device for synchronizing multiple screens of intelligent cabin and intelligent cabin | |
| JP2013118457A (en) | Screen display control system and screen display control method | |
| US10812906B2 (en) | System and method for providing a shared audio experience | |
| CN115474082A (en) | Method and apparatus for playing media data, system, vehicle, device and medium | |
| JP5564125B1 (en) | Video content synchronized playback system, video content playback device, and control program therefor | |
| CN106470119B (en) | Apparatus and method for metadata distribution in a network | |
| CN108924455B (en) | Overlay transmission system based on FPD-Link bus | |
| US20170026694A1 (en) | Adaptive selection amongst alternative framebuffering algorithms in efficient event-based synchronization of media transfer for real-time display rendering | |
| WO2019242092A1 (en) | Method for vehicle-mounted system to control mobile terminal | |
| KR20210011916A (en) | Transmission device, transmission method, reception device and reception method | |
| WO2021049181A1 (en) | Transmission device, transmission method, reception device, and reception method | |
| JP7298089B2 (en) | AUDIO PLAY PROCESSING METHOD, DEVICE, ELECTRONIC DEVICE AND STORAGE MEDIUM | |
| JP2019018771A (en) | On-vehicle system | |
| CN210639987U (en) | Vehicle-mounted multimedia playing device and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200121 |